Eraser



June 5, 1923.

F. E.l CARDY ERASER Filed Aug. 5 1921 2 Sheets-Sheet l Patented June 5, 1923. 1

PATENT OFFICE.I

UNITED STATES mit.:

FRED E. CAB/DY, OF CHICAGO, ILLINOIS.

scription, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to erasers designed primarily for use in removing chalk marks from blackboards or the like, and also tothe method of making the same.

One of the objects of the invention is to provide a simple, practical and effective eraser.

Another object of the invention is to simplify the construction, and method of man ufacture.

Another object of the invention is to secure durability and rigidity of construction.

Another object of the invention is to provide a stitched eraser having stitching only of such length as to permit it to be done in a practical manner and with stitching machines of the present day capacity.

Another lobj ect of the invention is to provide an advantageous method of making the erasers in quantity.

In the drawings Fig. 1 is a perspective view of an eraser embodying my present` invention; 'i

Fig. 2 is a longitudinal section of the same;

Fig. 3 is a cross section taken on line 3 3 in Fig. 2;

Fig. 4 is a view similar to Fig. l of a modiiied form of device;

Fig. 5 is a similar view of a still further modification Fig. 6 is a longitudinal section of the device of Fig. 5;

Fig. 7 is a cross section taken on line 7 7 in Fig. 6; and

Fig. 8 is an end view of the device of Fig. 4.

eferring to the drawings, and particularly to Figs. l to 3, inclusive, I show an Appueation sled August 5K, 1921. seriai No. 489,983. "Tf- 5 5, which with the side strips 3 3a form.; the main body of the eraser. Between the back 1 and the strips 4 -4 and 5 5 is a stiffening member'6 preferably made of hard felt or something of that sort. This stiiening member 6 also preferably extends into y the side projections 2 2. y

Stitching 7 7 extends through the side projections. 2 2, passing also preferably through the stiifening member 6. Other `stitching 8 secures the two strips 4 4 and the side strip 3 together; while still other stitching 9 secures the side strip 3a and the strips 5 5 together. Thus the side 3` and the strips 4 4 form one part or halfk ofthe eraser body and the side 3a and strips 5 5 form the other part or half of said body. Other stitching l0 10 extends through the back l and the stiifening member .6, and thence between the member 4 4 on the one hand, and members 5 5- on the other', and

then engages the cross stitching 8 8 and 9 9, as shown in Fig. 3. f The crossstitching 8 and 9 may be done by machine, and then the verticalstitching 10 10 may be done, also by machine, interlocking with the cross f stitching 8 and 9. Thus thewhole' eraser is held together and although the body is` composed of two parts this is'not at all objectionable, as the two parts are held closely together. v ,Uf In making the eraser a strip of felt long enough to make a plurality of erasers is lai `out and the sides 3 and?)a bent into posieraser having an outside strip, a part of tion. The strips 4-4 and 5 5 are then put in position and the stitching 8 8 and 9 9 is done. Then the stiifening member 6 is put in position and the long back strip folded so as to bring the same and the strips 4 4 and 5 5 vinto proper relationship after which the stitching 10-10 is done. An elongated article adapted to make a plurality of erasers is thus formed and then this article is cut into lengths to form such erasers. This method is very simple and exa peditious and at the same time allows a stitched eraserv to be made without requiring stitching of excessive length to be done. For example, the stitching 8 8 and 9 9 is only about half the width of the eraser, as shown 8, the strips 4a-.4 are sewed together by stitching 8a, wit-hout being sewed to the strip 3; and the strips 5ft-a are sewed together by stitching 9a, without being sewed either to the strip 3a or the strips 4a. This makes the cross-stitching through ia-and a-a, respectively, less than in the device of Figs. 1 3, because the outside strips 3 and 3a are not included. The cross-stitching is then engaged yby longitudinal lock-stitching l0-l0, as in the other form, and stitching 7 7 is passed through projections 2.

In the Vmodification 'shownin Figs. 5 7, inclusive, the out-side ymember or strip l is omitted, the cross-stitching 8a and vQtbeing the 'same as in the device of Figs 4 and 8,

Vand lockstitching` engaging the cross stitching 8 and 9a, and passing through the member 6, whichin the absence of the member l ,becomes the top member. This makes va very simple, convenient and inexpensive form oferaser.

It will be understood that changes and modifications may be made without departing from the spirit of the invention.

What I claim is:

l.- An eraser having its body formed of a plurality of connected parts, each of which is laminated, said parts being arranged side byside and in contact with one another, and stitching passi'ngjtransversely through each of said parts without passing through any other part.

2. An eraser having its body formed of a plurality of longitudinally extending parts,

VKeach comprising a plurality or" Astrips whereofthe outer sides of the two outermost parts are formed by downward extensions of the eraserl top, and stitching passing' `transverselythrough each of said parts without passing through other part.

3. An eraser comprisingv a back formed of, apiece of material Which is bent along its edges to form the outer sides of the eraser body and said body including strips arranged between said side strips, said intermediate'strgipsbeing divided into two groups and the strips of each group being separately stitched to the adjacent side strip.

4L. An eraser comprising integral back and side walls formed of a sheet of flexible material, and strips of flexible material between said walls, said strips being arranged parallel with said walls and divided into two groups, each of which is stitched `to the adjacent wall, and otherl stitchingpassing through said back and engagingthe iirst named stitching.

5. An eraser comprising integral back 'and side walls, formed of a sheet of flexible material, and strips of flexible material between said walls, said strips being arranged parallel with lsaid walls and divided into two groups, eachoil which 'fis vstitched tothe adjacent wall, and 'other stitching passing through said back and engaging the first named stitching, and -a stiiening member interposed between the back and said vintermediate strips and held in place by saidlast mentioned stitching. y

6. An eraser comprising a' back formed ot a piece of material its edges to fform the vouter sides ofthe eraser body and strips arranged between `said side strips, said intermediate strips being divided into two groups and the strips oeach group being separately stitched to the adjacent side strip, other stitching passing through the eraser back and engaging'the aforesaid stitching, and a "stitfei'iing member interposedbetween the back and said lintermediate strips and held-.in place' bysaid last mentioned stitching.

In witness whereof, I rhereunto subscribe my naine this 29th dayof July, A.;D., 1921.

FRED E. CARDY.y

which is bent along 

